package com.design.pattern.bridge;/** * create by yufeng on 2021/7/4 18:37 */public class UrgencyMessage extends AbastractMessage {    public UrgencyMessage(IMessage message) {        super(message);    }    void sendMessage(String message, String toUser){        message = "【加急】" + message;        super.sendMessage(message,toUser);    }    public Object watch(String messageId){        return null;    }}